It was the knot of wordy socialists and working-class philosophers that held forth in the City Hall Park on warm afternoons that was responsible for the great discovery. Once or twice in the month, while riding through the park on his way to the library, Martin dismounted from his wheel and listened to the arguments, and each time he tore himself away reluctantly. The tone of discussion was much lower than at Mr. Morse's table. The men were not grave and dignified. They lost their tempers easily and called one another names, while oaths and obscene allusions were frequent on their lips. Once or twice he had seen them come to blows. And yet, he knew not why, there seemed something vital about the stuff of these men's thoughts. Their logomachy was far more stimulating to his intellect than the reserved and quiet dogmatism of Mr. Morse. These men, who slaughtered English, gesticulated like lunatics, and fought one another's ideas with primitive anger, seemed somehow to be more alive than Mr. Morse and his crony, Mr. Butler.

Martin had heard Herbert Spencer quoted several times in the park, but one afternoon a disciple of Spencer's appeared, a seedy tramp with a dirty coat buttoned tightly at the throat to conceal the absence of a shirt. Battle royal was waged, amid the smoking of many cigarettes and the expectoration of much tobacco-juice, wherein the tramp successfully held his own, even when a socialist workman sneered, "There is no god but the Unknowable, and Herbert Spencer is his prophet." Martin was puzzled as to what the discussion was about, but when he rode on to the library he carried with him a new-born interest in Herbert Spencer, and because of the frequency with which the tramp had mentioned "First Principles," Martin drew out that volume.

So the great discovery began. Once before he had tried Spencer, and choosing the "Principles of Psychology" to begin with, he had failed as abjectly as he had failed with Madam Blavatsky. There had been no understanding the book, and he had returned it unread. But this night, after algebra and physics, and an attempt at a sonnet, he got into bed and opened "First Principles." Morning found him still reading. It was impossible for him to sleep. Nor did he write that day. He lay on the bed till his body grew tired, when he tried the hard floor, reading on his back, the book held in the air above him, or changing from side to side. He slept that night, and did his writing next morning, and then the book tempted him and he fell, reading all afternoon, oblivious to everything and oblivious to the fact that that was the afternoon Ruth gave to him. His first consciousness of the immediate world about him was when Bernard Higginbotham jerked open the door and demanded to know if he thought they were running a restaurant.

Martin Eden had been mastered by curiosity all his days. He wanted to know, and it was this desire that had sent him adventuring over the world. But he was now learning from Spencer that he never had known, and that he never could have known had he continued his sailing and wandering forever. He had merely skimmed over the surface of things, observing detached phenomena, accumulating fragments of facts, making superficial little generalizations - and all and everything quite unrelated in a capricious and disorderly world of whim and chance. The mechanism of the flight of birds he had watched and reasoned about with understanding; but it had never entered his head to try to explain the process whereby birds, as organic flying mechanisms, had been developed. He had never dreamed there was such a process. That birds should have come to be, was unguessed. They always had been. They just happened.

And as it was with birds, so had it been with everything. His ignorant and unprepared attempts at philosophy had been fruitless. The medieval metaphysics of Kant had given him the key to nothing, and had served the sole purpose of making him doubt his own intellectual powers. In similar manner his attempt to study evolution had been confined to a hopelessly technical volume by Romanes. He had understood nothing, and the only idea he had gathered was that evolution was a dry-as-dust theory, of a lot of little men possessed of huge and unintelligible vocabularies. And now he learned that evolution was no mere theory but an accepted process of development; that scientists no longer disagreed about it, their only differences being over the method of evolution.

And here was the man Spencer, organizing all knowledge for him, reducing everything to unity, elaborating ultimate realities, and presenting to his startled gaze a universe so concrete of realization that it was like the model of a ship such as sailors make and put into glass bottles. There was no caprice, no chance. All was law. It was in obedience to law that the bird flew, and it was in obedience to the same law that fermenting slime had writhed and squirmed and put out legs and wings and become a bird.

Martin had ascended from pitch to pitch of intellectual living, and here he was at a higher pitch than ever. All the hidden things were laying their secrets bare. He was drunken with comprehension. At night, asleep, he lived with the gods in colossal nightmare; and awake, in the day, he went around like a somnambulist, with absent stare, gazing upon the world he had just discovered. At table he failed to hear the conversation about petty and ignoble things, his eager mind seeking out and following cause and effect in everything before him. In the meat on the platter he saw the shining sun and traced its energy back through all its transformations to its source a hundred million miles away, or traced its energy ahead to the moving muscles in his arms that enabled him to cut the meat, and to the brain wherewith he willed the muscles to move to cut the meat, until, with inward gaze, he saw the same sun shining in his brain. He was entranced by illumination, and did not hear the "Bughouse," whispered by Jim, nor see the anxiety on his sister's face, nor notice the rotary motion of Bernard Higginbotham's finger, whereby he imparted the suggestion of wheels revolving in his brother-in-law's head.

What, in a way, most profoundly impressed Martin, was the correlation of knowledge - of all knowledge. He had been curious to know things, and whatever he acquired he had filed away in separate memory compartments in his brain. Thus, on the subject of sailing he had an immense store. On the subject of woman he had a fairly large store. But these two subjects had been unrelated. Between the two memory compartments there had been no connection. That, in the fabric of knowledge, there should be any connection whatever between a woman with hysterics and a schooner carrying a weather-helm or heaving to in a gale, would have struck him as ridiculous and impossible. But Herbert Spencer had shown him not only that it was not ridiculous, but that it was impossible for there to be no connection. All things were related to all other things from the farthermost star in the wastes of space to the myriads of atoms in the grain of sand under one's foot. This new concept was a perpetual amazement to Martin, and he found himself engaged continually in tracing the relationship between all things under the sun and on the other side of the sun. He drew up lists of the most incongruous things and was unhappy until he succeeded in establishing kinship between them all - kinship between love, poetry, earthquake, fire, rattlesnakes, rainbows, precious gems, monstrosities, sunsets, the roaring of lions, illuminating gas, cannibalism, beauty, murder, lovers, fulcrums, and tobacco. Thus, he unified the universe and held it up and looked at it, or wandered through its byways and alleys and jungles, not as a terrified traveller in the thick of mysteries seeking an unknown goal, but observing and charting and becoming familiar with all there was to know. And the more he knew, the more passionately he admired the universe, and life, and his own life in the midst of it all.

"You fool!" he cried at his image in the looking-glass. "You wanted to write, and you tried to write, and you had nothing in you to write about. What did you have in you? - some childish notions, a few half-baked sentiments, a lot of undigested beauty, a great black mass of ignorance, a heart filled to bursting with love, and an ambition as big as your love and as futile as your ignorance. And you wanted to write! Why, you're just on the edge of beginning to get something in you to write about. You wanted to create beauty, but how could you when you knew nothing about the nature of beauty? You wanted to write about life when you knew nothing of the essential characteristics of life. You wanted to write about the world and the scheme of existence when the world was a Chinese puzzle to you and all that you could have written would have been about what you did not know of the scheme of existence. But cheer up, Martin, my boy. You'll write yet. You know a little, a very little, and you're on the right road now to know more. Some day, if you're lucky, you may come pretty close to knowing all that may be known. Then you will write."

He brought his great discovery to Ruth, sharing with her all his joy and wonder in it. But she did not seem to be so enthusiastic over it. She tacitly accepted it and, in a way, seemed aware of it from her own studies. It did not stir her deeply, as it did him, and he would have been surprised had he not reasoned it out that it was not new and fresh to her as it was to him. Arthur and Norman, he found, believed in evolution and had read Spencer, though it did not seem to have made any vital impression upon them, while the young fellow with the glasses and the mop of hair, Will Olney, sneered disagreeably at Spencer and repeated the epigram, "There is no god but the Unknowable, and Herbert Spencer is his prophet."

But Martin forgave him the sneer, for he had begun to discover that Olney was not in love with Ruth. Later, he was dumfounded to learn from various little happenings not only that Olney did not care for Ruth, but that he had a positive dislike for her. Martin could not understand this. It was a bit of phenomena that he could not correlate with all the rest of the phenomena in the universe. But nevertheless he felt sorry for the young fellow because of the great lack in his nature that prevented him from a proper appreciation of Ruth's fineness and beauty. They rode out into the hills several Sundays on their wheels, and Martin had ample opportunity to observe the armed truce that existed between Ruth and Olney. The latter chummed with Norman, throwing Arthur and Martin into company with Ruth, for which Martin was duly grateful.

Those Sundays were great days for Martin, greatest because he was with Ruth, and great, also, because they were putting him more on a par with the young men of her class. In spite of their long years of disciplined education, he was finding himself their intellectual equal, and the hou............